JP4890371B2 - Stabilizer support structure - Google Patents

Description

  The present invention grips the outer peripheral surface of the torsion portion of the stabilizer that connects the left and right suspension devices with the inner peripheral surface of the cylindrical stabilizer bush, and the outer peripheral surface of the stabilizer bush is fixed to the mounting portion of the vehicle body and the vehicle body. The present invention relates to a support structure for a stabilizer that is clamped and fixed between fixing members.

A stabilizer bush is fitted to the outer periphery of the torsion part of the stabilizer that connects the left and right suspension devices, and this stabilizer bush is sandwiched between brackets and supported in the vehicle body in a state of being compressed radially inward. By forming a notch extending in the axial direction, the contact surface pressure against the outer peripheral surface of the torsion part is reduced, and the torsion part can be easily rotated with respect to the stabilizer bush to prevent the generation of abnormal noise. This is known from Patent Document 1 below.
JP-A-11-291736

  By the way, in the above-mentioned conventional one, since the notch is formed over the entire length of the stabilizer bush in the axial direction, when the left and right wheels move up and down in opposite phases and the stabilizer is twisted and deformed, the stabilizer is changed from the stabilizer bush to the stabilizer bush. When a radial load is applied, the sliding surface between the stabilizer bush and the torsion part opens, and sand particles and muddy water enter the sliding surface and cause abnormal noise. There was a problem of being promoted.

  The present invention has been made in view of the above circumstances, and while reducing the surface pressure of the sliding surface between the stabilizer bush and the stabilizer to prevent the generation of abnormal noise and the decrease in riding comfort, sand particles are formed on the sliding surface. The purpose is to prevent the intrusion of water and muddy water.

In order to achieve the above object, according to the first aspect of the present invention, an outer peripheral surface of a torsion portion of a stabilizer connecting left and right suspension devices is gripped by an inner peripheral surface of a cylindrical stabilizer bush, and the stabilizer In the stabilizer support structure in which the outer peripheral surface of the bush is fixed by being sandwiched between the mounting portion of the vehicle body and the fixing member fixed to the vehicle body, the intermediate portion of the outer surface of the stabilizer bush except for both ends in the axial direction. Forming a recess extending inward in the radial direction only on the vehicle body front side and vehicle body rear side of the torsion part, and forming an elastic film part between the bottom of the recess and the inner peripheral surface, wherein the average thickness of the elastic membrane portion, in the width direction of the recess that is perpendicular to both the depth direction and the axial direction of the recess as well as smaller than the average depth of the recesses The slits reaching the inner peripheral surface from the outer peripheral surface of the stabilizer bush are formed between both ends in the axial direction, and the slit and one of the recesses are formed with the axis of the stabilizer bush. A stabilizer support structure is proposed in which the concave portions are arranged side by side in the circumferential direction of the torsion portion at an interval shorter than the length in the width direction of the concave portion when viewed from an orthogonal projection plane .

  According to the configuration of the first aspect, since the concave portion extending inward in the radial direction is formed in the intermediate portion excluding both end portions in the axial direction of the outer peripheral surface of the stabilizer bush, the outer peripheral surface is formed between the mounting portion of the vehicle body and the fixing member. When sandwiched and fixed, the contact surface pressure between the inner peripheral surface of the stabilizer bush and the outer peripheral surface of the torsion portion of the stabilizer can be lowered in the portion where the concave portion is formed. Therefore, when the left and right wheels move up and down in the same phase and the torsion part of the stabilizer rotates, the slip to the torsion part starts from the axially intermediate part of the stabilizer bush having the low contact surface pressure. By spreading to the part, the torsion part can quickly slip with respect to the entire stabilizer bush, and the torsion part can be freely twisted and deformed to enhance the riding comfort of the vehicle. In addition, since the recesses are not formed at both ends in the axial direction of the stabilizer bush, the opening end of the inner peripheral surface of the stabilizer bush is brought into close contact with the outer peripheral surface of the torsion portion to prevent sand particles and muddy water from entering there. be able to.

  When the left and right wheels move up and down in opposite phases and the torsion part of the stabilizer twists and deforms, a vertical load is input to the stabilizer bush that supports both ends of the torsion part. Since it is formed only on the front side and the rear side of the vehicle body, it is possible to ensure the rigidity of the stabilizer bush against the load in the vertical direction to prevent excessive deformation and to stabilize the support of the stabilizer by the stabilizer bush.

  In addition, since the average thickness of the elastic film formed between the bottom of the concave portion of the stabilizer bush and the inner peripheral surface is set smaller than the average depth of the concave portion, the rigidity of the stabilizer bush is effectively reduced by the concave portion. The contact surface pressure between the elastic membrane part and the outer peripheral surface of the torsion part can be sufficiently reduced. Thereby, a slip is started from the part in which the contact surface pressure fell, and the torsion part can be smoothly rotated with respect to the stabilizer bush by the ripple spreading to the whole.

  In addition, since the average thickness of the elastic membrane portion is set to be smaller than the length in the width direction of the concave portion orthogonal to both the depth direction of the concave portion and the axial direction of the stabilizer bush, the rigidity of the stabilizer bush is further improved by the concave portion. Thus, the contact surface pressure between the elastic film portion and the outer peripheral surface of the torsion portion can be sufficiently reduced.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  1 to 8 show an embodiment of the present invention. FIG. 1 is a perspective view showing a state in which a stabilizer is attached to a vehicle, FIG. 2 is an enlarged view in the two-direction direction of FIG. 1, and FIG. FIG. 4 is a sectional view taken along line 4-4 of FIG. 2, FIG. 5 is a diagram showing the shape of the stabilizer bush, FIG. 6 is a diagram for explaining the action of the chamfered portion of the stabilizer bush, and FIG. 7 is a stabilizer. The figure which shows the pressure distribution of the sliding surface of a bush, FIG. 8 is a graph explaining an effect.

  As shown in FIG. 1, strut-type suspension devices S, S for suspending left and right wheels W, W include left and right knuckles 11, 11 supported on a vehicle body via suspension arms 10, 10 so as to be movable up and down. The dampers 12 and 12 coupled to the upper portions of the knuckles 11 and 11 and extending upward, the suspension springs 13 and 13 disposed coaxially on the outer periphery of the dampers 12 and 12, and the upper portions of the left and right knuckles 11 and 11 And a stabilizer 14 for connecting the two.

  The stabilizer 14 smoothes the torsion part 15 linearly extending in the vehicle width direction, the left and right arm parts 16 and 16 extending linearly from both ends of the torsion part 15 to the rear of the vehicle body, and the torsion part 15 and the arm parts 16 and 16. And left and right curved portions 17 connected to each other. The distal ends of the left and right arm portions 16, 16 are connected to the dampers 12, 12 via links 22, 22, respectively. Stabilizer bushes 18, 18 made of cylindrical rubber are fitted to both ends of the torsion portion 15 adjacent to the left and right curved portions 17, 17, and these stabilizer bushes 18, 18 are U-shaped attachments of the vehicle body 19. It is sandwiched and supported between a portion 19a (see FIG. 2) and a plate-like mounting bracket 21 fixed to the vehicle body 19 with bolts 20 and 20 so as to cover the mounting portion 19a.

  As is apparent from FIGS. 2 to 5, each stabilizer bush 18 includes a flat first outer peripheral surface 18 a and a U-shaped cross section perpendicular to the axis L and a wavy cross section in the direction along the axis L. 2 An outer peripheral surface 18b, a pair of side surfaces 18c and 18c, and an inner peripheral surface 18d having a circular cross section that is opened in both side surfaces 18c and 18c and into which the torsion portion 15 of the stabilizer 14 is fitted. The diameter of the inner peripheral surface 18d at both ends in the direction of the axis L is slightly smaller than the diameter of other portions.

  The stabilizer bush 18 is formed with a slit 18e having a split groove shape that is disposed in a plane including the axis L and reaches the inner peripheral surface 18d from the second outer peripheral surface 18b. Further, chamfered portions 18f and 18f are formed at portions where the inner peripheral surface 18d is opened to the side surfaces 18c and 18c of the stabilizer bush 18 so as to sandwich the slit 18e from both sides in the circumferential direction. Further, a rectangular positioning projection 18g is projected from the center of the flat first outer peripheral surface 18a of the stabilizer bush 18.

  Each of the chamfered portions 18f is formed only on both sides sandwiching the slit 18e, and the shape seen in the direction of the axis L is a crescent shape that curves from the inner peripheral surface 18d of the stabilizer bush 18 toward the radially outer side. There is no. The depth of the chamfered portion 18f in the direction of the axis L is deepest at a position where the slit 18e intersects the inner peripheral surface 18d of the stabilizer bush 18 and gradually becomes shallower radially outward therefrom, and at the same time in the circumferential direction. It gradually becomes shallower toward both sides.

  Two elongated recesses 18h and 18h extending in the direction of the axis L are formed on the front and rear surfaces of the second outer peripheral surface 18b of the stabilizer bush 18. The concave portions 18h, 18h of the stabilizer bush 18 are formed only at the center portion in the direction of the axis L of the second outer peripheral surface 18b, and end at the front positions of both end portions in the direction of the axis L. The recesses 18h and 18h do not penetrate to the inner peripheral surface 18d, and elastic thin films 18i and 18i are formed between the bottom and the inner peripheral surface 18d. The average thickness α of the elastic thin film 18i is set smaller than the average depth β of the recess 18h (see FIG. 5D).

  In addition to the above configuration, it is desirable that the average thickness α of the elastic film portion 18i be smaller than the length γ in the width direction of the recess 18h perpendicular to both the depth direction and the axis L direction of the recess 18h ( 5D), it is possible to sufficiently secure the area of the elastic film portion 18i and further reduce the contact surface pressure.

  The slit 18e and the one recess 18h are arranged in the circumferential direction of the torsion portion 15 with an interval shorter than the length γ in the width direction of the recess 18h when viewed on the projection plane orthogonal to the axis of the stabilizer bush 18. They are arranged side by side.

  Further, the side surfaces 18c and 18c of the stabilizer bush 18 are provided with recesses 18k and 18k that avoid the position of the slit 18e and surround the outside of the inner peripheral surface 18d in a C shape.

  The stabilizer bush 18 having the shape as described above can be fitted to the outer peripheral surface of the torsion portion 15 of the stabilizer 14 by elastically deforming and widening the slit 18e. Then, the U-shaped second outer peripheral surface 18b of the stabilizer bush 18 is fitted into the U-shaped mounting portion 19a of the vehicle body 19, and the flat first outer peripheral surface 18a is held in contact with the flat mounting bracket 21. The

  At this time, the positioning projection 18g of the stabilizer bush 18 is fitted into the positioning hole 21a of the mounting bracket 21, and the second outer peripheral surface 18b having a corrugated cross section along the axis L is formed on the mounting portion 19a of the vehicle body 19 having the same shape. By closely contacting, the stabilizer bush 18 is positioned so as not to move in the direction of the axis L. Moreover, the stabilizer bush 18 is sandwiched between the vehicle body 19 and the mounting bracket 21 and compressed radially inward with a predetermined tightening allowance, and its inner peripheral surface 18d is pressed against the outer peripheral surface of the torsion portion 15 of the stabilizer 14 and is slit. 18e is pressed to close.

  The diameter of the inner peripheral surface 18d in the free state of the stabilizer bush 18 is slightly larger (for example, 0.5 mm) than the diameter of the torsion portion 15 of the stabilizer 14 except for both ends in the axis L direction. When the mounting bracket 21 is compressed inward in the radial direction when being fixed to the mounting portion 19a of the vehicle body 19, the contact surface pressure between the inner peripheral surface 18d of the stabilizer bush 18 and the outer peripheral surface of the torsion portion 15 is more than necessary. It is considered not to become high. Thereby, the load which compresses the stabilizer bush 18 radially inward can be made to act on the slit 18e effectively, and can be made to closely_contact | adhere so that the slit 18e may not open.

  Further, a part of the curved portions 17 and 17 connected to both ends of the torsion portion 15 of the stabilizer 14 is engaged with the outer end portions in the vehicle width direction of the inner peripheral surfaces 18d and 18d of the left and right stabilizer bushes 18 and 18. Thus, the stabilizer 14 can be positioned in the vehicle width direction without providing a special positioning member for the stabilizer 14.

  When the left and right wheels W, W move up and down in the same phase, the stabilizer 14 configured in this way is because the left and right arm parts 16, 16 move up and down in the same phase and the torsion part 15 is not twisted. When the left and right wheels W, W move up and down in opposite phases, but no roll moment is generated, the left and right arm parts 16, 16 move up and down in opposite phases and the torsion part 15 is twisted, so that the rolling of the vehicle body The roll moment which suppresses can be generated and the steering stability of a vehicle can be improved.

  By the way, when the left and right wheels W, W move up and down in opposite phases and the torsion part 15 of the stabilizer 14 is twisted and deformed, the left and right ends of the torsion part 15 supported by the stabilizer bushes 18 and 18 respectively move in the vertical direction. Since the load to be generated is generated, the slits 18e and 18e of the stabilizer bushes 18 and 18 are opened from the portion connected to the inner peripheral surfaces 18d and 18d, and sand particles and muddy water enter from the gaps generated there, It may cause wear. In the present embodiment, the chamfered portions 18f, 18f formed at the positions sandwiching the slit 18e at both ends of the inner peripheral surface 18d of the stabilizer bush 18 in the direction of the axis L prevent the slit 18e from opening, Muddy water can prevent intrusion.

  That is, when the chamfered portion 18f is provided at a position sandwiching the slit 18e at the end in the axis L direction of the inner peripheral surface 18d of the stabilizer bush 18, a compressive load A in the direction orthogonal to the axis L in FIG. Thus, an inward load B in the direction of the axis L can be generated, and the surface pressure at which the a portion of the opening end of the inner peripheral surface 18d at the position sandwiching the slit 18e contacts the torsion portion 15 can be increased. As a result, even when a radial load is applied to the torsion portion 15, a gap is prevented from being generated between the outer peripheral surface and the inner peripheral surface 18 d of the stabilizer bush 18, and sand particles from the end of the slit 18 e are prevented. And muddy water can be prevented from entering. In addition, since the stabilizer bush 18 does not have a thin lip, durability is improved.

  The function of the chamfered portion 18f to prevent sand grains and muddy water from entering varies depending on the magnitude of the acute angle θ formed by the axis L of the stabilizer bush 18 and the chamfered portion 18f. As shown in FIG. 6, when the sand particles S are pressed against the chamfer 18f in the direction of the axis L by the load F, the load F is in the direction orthogonal to the component F1 in the direction orthogonal to the chamfer 18f and the direction of the axis L. The reaction force F2 ′ of the component F2 which is decomposed into the component F2 and orthogonal to the axis L attempts to push the chamfer 18f open.

  FIGS. 6A and 6B show cases where the acute angle θ is 65 ° and 35 °, respectively. In the case of FIG. 6A where the acute angle θ is large, the reaction force F2 ′ that pushes and opens the chamfered portion 18f is small, but in the case of FIG. 6B where the acute angle θ is small, the chamfered portion 18f is pushed open. The reaction force F2 'to be increased is increased. Therefore, when the acute angle θ is increased, the foreign matter is less likely to bite into the chamfered portion 18f, and the foreign matter once bited in is easily discharged without staying there. For the above reasons, the lower limit of the acute angle θ is preferably 45 °.

  On the other hand, as described above, when the acute angle θ approaches a right angle, the chamfered portion 18f is pushed out to the outside in the axis L direction by a load for compressing the stabilizer bush 18 radially inward, so that the acute angle θ opens. The upper limit of θ is preferably 75 °. Accordingly, if the acute angle θ is set in the range of 45 ° to 75 °, the opening end of the inner peripheral surface 18d of the stabilizer bush 18 is difficult to open, and the foreign matter bites into the chamfered portion 18f and the bite foreign matter is difficult to be discharged. Can be prevented.

  Further, since the C-shaped recess 18k arranged so as to surround the axis L is formed on the side surface of the stabilizer bush 18 so as to avoid the slit 18e portion, the portion of the side surface of the stabilizer bush 18 except for the vicinity of the slit 18e is excluded. By reducing the rigidity by the concave portion 18k and increasing only the rigidity in the vicinity of the slit 18e as compared with other portions, it is possible to more effectively suppress the opening of the slit 18e.

  When the left and right wheels W, W move up and down in the same phase and the torsion portion 15 of the stabilizer 14 rotates, the outer peripheral surface of the torsion portion 15 and the inner peripheral surface d of the stabilizer bush 18 rotate relative to each other. If the contact surface pressure of the sliding surface is too high, the relative rotation is not performed smoothly, and the ride quality of the vehicle may be reduced. On the other hand, if the contact surface pressure of the sliding surface is too low, the relative rotation is performed smoothly and the riding comfort of the vehicle is improved, but the slits 18e and 18e of the stabilizer bush 18 are connected to the inner peripheral surfaces 18d and 18d. There is a possibility that sand particles and muddy water will intrude through the gap generated there, and cause noise and wear. In the present embodiment, while allowing relative rotation of the stabilizer bush 18 and the torsion part 15 to be easily performed, the slit 18e is prevented from opening and sand particles and muddy water are prevented from entering.

  That is, when the stabilizer bush 18 is sandwiched between the vehicle body 19 and the mounting bracket 21 and compressed radially inward, the recesses 18h and 18h are formed at the intermediate portion in the axis L direction of the second outer peripheral surface 18b of the stabilizer bush 18. Therefore, the contact surface pressure between the outer peripheral surface of the torsion portion 15 and the inner peripheral surface 18d of the stabilizer bush 18 is decreased due to a decrease in rigidity in the vicinity of the recesses 18h and 18h. The effect of reducing the contact surface pressure is more effectively exhibited by setting the average thickness α of the elastic thin film 18i to be smaller than the average depth β of the recess 18h and the length γ in the width direction. This is because the elastic thin film 18i is thinned and the area of the elastic thin film 18i is sufficiently secured by the above configuration.

  FIG. 7 shows the distribution of the contact surface pressure between the inner peripheral surface 18d and the torsion portion 15 when pressure is evenly applied radially inward to the first and second outer peripheral surfaces 18a, 18b of the stabilizer bush 18. It can be seen that the contact surface pressure of the portion where the recesses 18h, 18h are present is reduced.

  On the other hand, since the recesses 18h and 18h are not formed at both ends of the second outer peripheral surface 18b of the stabilizer bush 18 in the axis L direction, the inner peripheral surface 18d of the stabilizer bush 18 is secured by ensuring the rigidity of the both ends. The opening end to the side surfaces 18c, 18c is pressed strongly against the outer peripheral surface of the torsion part 15, and the portion where the slit 18e opens to the side surfaces 18c, 18c is brought into close contact with each other, so that generation of a gap can be reliably prevented.

  In this way, the contact surface pressure of the sliding surface at the intermediate portion in the direction of the axis L of the inner peripheral surface 18d of the stabilizer bush 18 is locally reduced, so that when a torsional load is applied to the torsion portion 15 of the stabilizer 14 By starting slip of the sliding surface from the intermediate portion in the axis L direction where the contact surface pressure is low, and spreading the slip to both ends in the axis L direction where the contact surface pressure is high, the entire sliding surface can be quickly Moreover, the vehicle can be smoothly shifted to the slip state, and the riding comfort of the vehicle can be enhanced. In addition, the axial L-direction end portions of the inner peripheral surface 18d of the stabilizer bush 18 where sand particles and muddy water are likely to invade are not provided with the recesses 18h and 18h, so that the contact surface pressure of the sliding surface is sufficiently secured, and the slit 18e is formed. It can be prevented from opening and sand particles and muddy water can be prevented from entering.

  Further, when the left and right wheels W, W move up and down in opposite phases and the torsion portion 15 of the stabilizer 14 is twisted and deformed, a load in the vertical direction is input to the stabilizer bushes 18 and 18 that support both ends of the torsion portion 15. Since the recesses 18h, 18h of the stabilizer bush 18 are formed on the vehicle body front side and vehicle body rear side of the torsion part 15, the rigidity of the stabilizer bush 18 against the load in the vertical direction is ensured to prevent excessive deformation, and the stabilizer bush 18 The support of the stabilizer 14 can be stabilized.

  FIG. 8 shows the relationship between the rotation angle of the torsion part 15 relative to the stabilizer bush 18 and the torque at which the frictional force of the sliding surface prevents the rotation. The characteristic of the conventional example indicated by the broken line is a case where the sliding surface is difficult to slip, and the torque for preventing the rotation increases with the increase of the rotation angle, so that the relative rotation of the torsion portion 15 is inhibited and the ride comfort is increased. There is a problem that decreases. On the other hand, the characteristic of the embodiment indicated by the solid line is a state in which the sliding surface easily slips, and the smooth relative rotation of the torsion portion 15 is allowed, and the riding comfort can be improved.

  Next, a reference embodiment of the present invention will be described based on FIG.

  Although the recesses 18h and 18h of the stabilizer bush 18 of the embodiment do not reach the inner peripheral surface 18d, the recesses 18h and 18h of the stabilizer bush 18 of the reference embodiment communicate with the inner peripheral surface 18d. A lip 18j that contacts the outer peripheral surface of the torsion portion 15 is formed on one side in the circumferential direction of the portion where the recess 18h communicates with the inner peripheral surface 18d. The radial width w of the lip 18j is almost zero on the distal end side (lower side in the figure), and gradually increases from there toward the proximal side (upper side in the figure).

  According to the present embodiment, since the recesses 18h and 18h of the stabilizer bush 18 penetrate to the inner peripheral surface 18d, the friction force of the elastic film portion 18 in the first embodiment is eliminated, and the average contact of the sliding surface The surface pressure can be further reduced. Moreover, since the thickness of the lip 18j that contacts the outer peripheral surface of the torsion portion 15 decreases from the proximal end to the distal end, the contact surface pressure at the distal end is reduced to almost zero, and the inner peripheral surface 18d of the stabilizer bush 18 is reduced. And the outer peripheral surface of the torsion part 15 can function as a starting point for starting the slip, thereby allowing further smooth relative rotation of the torsion part 15 and further improving the riding comfort.

  As mentioned above, although embodiment and reference form of this invention were demonstrated, this invention can perform a various design change in the range which does not deviate from the summary.

  For example, the stabilizer 14 according to the embodiment integrally includes the torsion part 15, the arm parts 16, 16 and the bending parts 17, 17, but the arm part 16, which is configured as a separate member at both ends of the linear torsion part 15, 16 may be fixed with a bolt or the like.

  In the embodiment, the strut suspension S is exemplified, but the stabilizer 14 of the present invention can be applied to any type of suspension device.

  Further, in the embodiment, the stabilizer bush 18 is sandwiched and supported between the U-shaped mounting portion 19 a formed on the vehicle body 19 and the flat mounting bracket 21, but the U-shaped mounting is mounted on the flat surface of the vehicle body 19. You may support the stabilizer bush 18 using a bracket.

  In the embodiment, the arm portions 16 and 16 of the stabilizer 14 are connected to the dampers 12 and 12. However, the arm portions 16 and 16 of the stabilizer 14 may be connected to the knuckle 11 and 11 or the suspension arms 10 and 10. .

  The stabilizer bush 18 according to the embodiment includes the chamfered portion 18f and the recessed portion 18h on the side surface 18c, but these can be omitted.

  Moreover, although the stabilizer bush 18 of the embodiment includes two recesses 18h on the second outer peripheral surface 18b, the number thereof is arbitrary. It is also possible to provide the recess 18h on the first outer peripheral surface 18a.

  Further, the vehicle body to which the stabilizer bush 18 is attached includes a subframe.

The perspective view which shows the attachment state to the vehicle of the stabilizer which concerns on embodiment 2 direction enlarged view of FIG. 3-3 sectional view of FIG. Sectional view along line 4-4 in FIG. Diagram showing the shape of the stabilizer bush Action explanatory diagram of chamfered portion of stabilizer bush Figure showing the pressure distribution on the sliding surface of the stabilizer bush It is a graph explaining the effect The figure which shows the shape of the stabilizer bush concerning a reference form

14 Stabilizer 15 Torsion section 18 Stabilizer bush 18a First outer peripheral surface (outer peripheral surface)
18b Second outer peripheral surface (outer peripheral surface)
18d Inner peripheral surface 18e Slit 18h Recess 18i Elastic film 18j Lip S Suspension device W Wheel w Lip thickness radial thickness α Elastic film average thickness β Recess average depth γ Recess width

Claims (1)

The outer peripheral surface of the torsion part (15) of the stabilizer (14) connecting the left and right suspension devices (S) is held by the inner peripheral surface (18d) of the cylindrical stabilizer bush (18), and the stabilizer bush (18) In a stabilizer support structure in which the outer peripheral surfaces (18a, 18b) are clamped and fixed between a mounting portion (19a) of a vehicle body (19) and a fixing member (21) fixed to the vehicle body (19).
The intermediate portion excluding both ends in the axial line (L) direction of the outer peripheral surface (18b) of the stabilizer bush (18) has only a portion in the radial direction on the front side and the rear side of the torsion portion (15). A concave portion (18h) extending in the direction is formed, and an elastic film portion (18i) is formed between the bottom of the concave portion (18h) and the inner peripheral surface (18d), and an average of the elastic film portions (18i) The thickness (α) is made smaller than the average depth (β) of the recess (18h), and the recess (18h) is orthogonal to both the depth direction of the recess (18h) and the axis (L) direction. The slit (18e) reaching the inner peripheral surface from the outer peripheral surface of the stabilizer bush (18) is formed between both end portions in the axis (L) direction. And one of the slits (18e) The concave portion (18h) is an interval shorter than the length (γ) of the concave portion (18h) in the width direction when viewed on a projection plane orthogonal to the axis (L) of the stabilizer bush (18). A support structure for a stabilizer, wherein the support structure is arranged in the circumferential direction of the torsion part (15).

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